The canonical tome in English for Iranian food is Food of Life by Najmieh Batmanglij. She covers stews, breads, desserts, and more from all over the country (for example, northern Iranians refuse to eat fish but Iranians around the Persian Gulf have all kinds of delicious seafood stews!)

You can use www.foodblogsearch.com to find more. I just checked, put in 'persian' and many came up, with the food52 spinach dip (link above from Nozle) near the top.
There's a book that came out maybe 30 -40 years ago, called In a Persian Kitchen, that I just saw on the shelves of my local library.